At the moment we have rather dfficult situation because custom ROMs based on AOSP (such as my AD which is not yet public) require previous OOS LP firmware, while OOS 3.0 includes new MM firmware which breaks both older recoveries and custom ROMs.
As I need to switch between OOS 3.0 and my AD quite frequently, I created two helpful flashable zips so I can do that easily, and because it's useful for me, perhaps it'll be useful for you too.
Download: MM | LP
Instructions:
- Download the firmware you want (or both, if you want easy switching)
- Unpack downloaded zip, you'll find firmware-update.zip and recovery.img inside
- Put both of those files on your phone, in appropriately named directory such as "firmware-LP" or "firmware-MM"
- When you will need to do a switch, simply firstly flash firmware-update.zip, then flash recovery.img as recovery image via "flash image" option in TWRP
- Reboot to load new firmware
So if you have two TWRP backups - one of OOS 3.0 and one of CM13.0, make sure that you have proper firmware (and recovery) after restoring backup - LP for CM13.0, and MM for OOS 3.0.
Hope it helps, have fun. Try to be careful with those, if you mix up wrong recovery with wrong firmware you'll need to flash proper recovery.img variant via fastboot. You can't hard brick anything by using those files, in worst case soft-brick if both your recovery and your ROM will be for wrong firmware you have.
Have fun.
As I need to switch between OOS 3.0 and my AD quite frequently, I created two helpful flashable zips so I can do that easily, and because it's useful for me, perhaps it'll be useful for you too.
Download: MM | LP
Instructions:
- Download the firmware you want (or both, if you want easy switching)
- Unpack downloaded zip, you'll find firmware-update.zip and recovery.img inside
- Put both of those files on your phone, in appropriately named directory such as "firmware-LP" or "firmware-MM"
- When you will need to do a switch, simply firstly flash firmware-update.zip, then flash recovery.img as recovery image via "flash image" option in TWRP
- Reboot to load new firmware
So if you have two TWRP backups - one of OOS 3.0 and one of CM13.0, make sure that you have proper firmware (and recovery) after restoring backup - LP for CM13.0, and MM for OOS 3.0.
Hope it helps, have fun. Try to be careful with those, if you mix up wrong recovery with wrong firmware you'll need to flash proper recovery.img variant via fastboot. You can't hard brick anything by using those files, in worst case soft-brick if both your recovery and your ROM will be for wrong firmware you have.
Have fun.
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